Louis takacs



L. TAKACS. DAMPER REGULATING MECHANISM FOR FURNACES.

-Y APPLICATION FILED FEB. 3,1919. 1,318.1 18.

Patented Oct. 7, 1919.

INVENTOR AT'IORNEY Tm; COLUMBIA PLANQQRAPH c0 WASHINGTON. D. c.

LOUIS TAKACS, F BBIDGEPORI', CONNECTICUT.

nnivrrnaanennarrne MECHANISM FOR :rnitmicns.

Specification of Letters Patent.

Patented Oct. '7, 1919.

.Application filed February 3, 1919. serial 1%.274521.

To all whom'it may concern:

Be it known that I, LOUIS TAKAGS, a citizen of the Republic ofHungary, residing at Bridgeport, county of Fairfi'eld, State of Connecticut, have invented an Improvement in Damper-Regulating Mechanism for Furnaces, of which the following is a specifica dampers of furnaces, that will effect an im? portant saving in fuel, that will enable the operator to regulate the draft at will by means of the flue damper independently of the operation of the coaling doors, and which shall be so constructed and arranged as to make itimpossibletoopen the coaling doors without closing the flue damper, thus wholly obviatingthe danger of a back draft and a burst of flame and gas when the coaling doors are opened, and furthermore assuring a maintenance of the thermal efficiency of the boiler during the operation of coaling, as the inrush of a volume of cold air and the consequent cooling of the boiler tubes and the walls of the furnace is prevented. y

With these and other objects in view I have devised the .novel damper regulator which I will now describe referring to the accompanying drawing forming a part of this specification and using reference charac tersto indicate theseveral parts. I

Figure l is a perspective view, of a fur.- nace, partly broken away, showing the application thereto of my novel damper regulator, the coaling doors beingclosed and the regulator having been operated to lock the doors and open the flue damper, and p Fig. 2 is a similar view, the regulator havingbeen operated to closethe' flue damper and one of the coaling doors being opened.

10 denotes a furnace which may be of any ordinary or preferred type, 11 the coaling doors, 12 the ash pit doors, and 13 the flue damper, which is rigidly secured to a shaft 14 one end of which extends through shaft is provided with an operating handle.

18, for convenience in manipulation, and with looking arms 19, which are suitably shaped to engage the coalmg doors when closed and lock them in the closed position until the shaft is operated. I have shown these arms as bent to angular form and provided with contact plates 20 which lie fiat against thefaces of the coaling doors in the closed position. One end of the shaft 16 extends outward beyond the side of the furnace and has rigidly secured thereto one or more pulleys of-diiferent sizes, indicated by 21. 22 denotes a weight attached to a cable 23, the other end of which is connected to one of the pulleys, passing-partly around the periphery thereof. These pulleys also have connected to them other cables, indicated respectivelyb-y 2 1 and 24: having at their free ends respectivelyhooks 25 and 25 One ofthese hooks is connected to a ring at the end of a cable 26 which passes over guide pulleys 27 and is connected to arm 15 on the damper shaft. From this arm the cable extends over another pulley 27 and carries at its end a weight 28. WVeights 28 and 22 act as a counter-balance and cause the regulatorto work easily.

The operation will be obvious from the drawing. Then the coaling doors are closed, as in Fig. 1, and the locking arms are placed in engagement therewith by oscil 18131011 of shaft 16, the damper will be in the open positlon and it will be impossible to open the coaling doors without first independently oscillating the shaft by means of handle 18, the eflect of which will be to partly or wholly close the damper. If the shaft is turned backward far enough to throw the locking arms to their extreme position, as in Fig. 2, the damper will be wholly closed, as shown. If the shaft is turned only far enough so that the doors in opening can clear the locking arms, then the damper will be only partly closed,for example seventy-five per cent. closed. Should the general conditions of draft, etc., be such that itis preferable not to wholly close the damper, the cable attached to the larger pulley may be disconnected from cable 26 and the cable attached to the smaller pulley may be connected to cable 26, the effect of whichwouldbe to impart less closing move ment to the damper. It will readily be seen that whether the damper is wholly or partly closed when the locking arms are at their locking position, as in Fig. 1, 1s merely a 7 while the damper may be regulated to suit conditions when the coal-ing-d'oorsare closed, the coaling doors cannot be opened Without either partly or wholly closing the damper as may be found most effective. In coaling one of the coaling doors only :should be opened at a time. I have found in practice that the use of this regulatdr effects an important saving in the amount .of fuel required to maintain the thermal efficiency of the boiler.

. Having thus described my invention, I claim:

1. In a draft regulating mechanism .for furnaces, the combination with a flue damper, of an oscillatory regulating shaft provided with means for locking the furnace door in closed position, means by which said shaftmay be oscillated, and a positive connection between the damper and the regulating shaft, whereby movement of said shaft actuates the damper, said door locking means and said damper being so related that the furnace door cannot be opened until the damper has first been shifted from the position normally occupied when the door is closed.

2. In a draft regulating mechanism for furnaces, the combination with a fiue damper, of an oscillatory regulating shaft, locking arms projecting from said shaft and having door engaging portions for locking the furnace doors in closed position, means by which said shaft may be oscillated, and a positive connection between the damper and theregulatin'g shaft, whereby movement of said shaft actuates the damper, said door locking means and said damper being so related that the furnace doors cannot be opened until the damper has first been shifted from the position normally occupied when the door is closed. p, I v

3. In a draft regulating mechanism for furnaces, the combination with a flue damper, of an oscillatory regulating shaft, an angular arm projecting-from said shaft and provided at its free end with a door engaging portion for locking the furnace door in closed position, means'by whichsaid shaft may be oscillated, and a positive connection' between the damper and the regulating shaft, whereby movement of said shaft actuates the damper, said door locking means and said damper being so related that the furnace doors cannot be opened until thedamper has first been'shifted from the position normally occupied when the door is closed.

4. In a draft regulating mechanism for furnaces, the conibinatlon wlth a flue damper, of an oscillatory regulating shaft provided with inaea-ns for locking the furnace door 1n closed posltion, a pulley car- 5. In a draft regulating mechanism for furnaces, the combination with a flue damper mounted upon a shaft provided with an operating arm, of an oscillatory regulating shaft provided with means for locking the furnace door in closed position, means by which said shaft may be oscillated, a pulley secured to said regulating shaft, a cable attached to said pulley and passing partly around it, a weight attached to said cable, a cable connection between said pulley and said damperoperating arm, and a weight attached to the cable connection, said door locking means and said damper being so related that the furnace door cannot be opened untilpthedamper has first been shifted from the position normally occupied wl1en-tl1e door is closed.

6. In a draft regulatiirg mechanism for furnaces, the combination with a. damper, of an oscillatory regulating shaft provided with a :pulley on one end, means by which the shaft may be oscillated, a cable passed partially around "said pulley and having oneend attached thereto, a weight'attached to the other end of said cable,- a second cable attached to snapuue means for com netting the secondcable to the damper, and

means for eounterbalancing thedamper.

7. In a draft regulating mechanism for furnaces, the combination with a damper, of an oscillatory regulating shaft provided at one end-with pulleys of different sizes,

means by w hich "the shaft may be oscillated,

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